- 更多网络例句与缩醛相关的网络例句 [注：此内容来源于网络，仅供参考]
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The experiment gains reaction parameters of methylal from formaldehyde and methanol,it also found a mathematical model for continuous production process.
通过实验取得了甲醛和甲醇合成甲缩醛的反应参数；建立了其连续生产工艺的数学模型，利用ASPEN PLUS软件对甲醛和甲醇缩合生成甲缩醛进行了模拟，结果表明反应精馏连续生产甲缩醛的工艺是可行的，转化率高达99%，并得到含甲缩醛99%的产物，同时确定了进料板和反应区。
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The experiment results indicate that: the increases of catalyst concentration, feed mole ratio of methanol to formaldehyde and the decrease of total feed flow can increase the yield of methylal; the concentration of methylal in distillate also increases with the increase of catalyst concentration; that the effects of reflux ratio on the yield and concentration of methylal in distillate are different from conventional distillation process, an optimal value of reflux ratio exists between 1 and 2 for this process.
实验结果表明：回流比对甲缩醛收率和塔顶甲缩醛纯度的影响不同于一般的精馏过程，存在一个最优回流比，本过程最佳回流比在1-2之间；提高催化剂浓度，甲缩醛收率和塔顶甲缩醛纯度均增加；提高进料醇醛摩尔比也会提高甲缩醛收率；进料总流量对甲缩醛的收率的影响十分明显，进料总流量减少可以使甲缩醛的收率得到明显提高。
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Under the protection of purified water-free, oxygen-free argon, using Schlenk technique, the rare rarth organometallic complexes containing piperonal dimethyl acetal and dicyclopentadienyl and involving silylene-bridged fluorenyl have been synthesized.
合成了含胡椒醛二甲基缩醛基和二茂基稀土金属有机配合物。采用Schlenk技术，在干燥纯氩气保护下进行。将溴代胡椒醛二甲基缩醛基锂盐与二茂基一氯稀土（Ln：Yb，Dy，Pr，La，Sm）反应，形成5个新的文献未曾报道的稀土金属有机配合物。
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In this paper, the acetalization of benzylaldehyde and 1,3-propanediol in the presence of vanadium phosphorus oxide catalyst was studied.
研究了苯甲醛与1，3-丙二醇在钒磷氧催化剂作用下的缩醛化反应，考察了反应时间、醇醛比、催化剂用量、带水剂种类和用量等因素对苯甲醛1，3-丙二醇缩醛收率的影响。
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The acetalization parameters including acetalization time, acetalization temperature,amounts of sulfate and amounts of formaldehyde were investigated.
研究了不同的缩醛化浴配方以及缩醛化条件对胶原蛋白/PVA初生复合纤维中的蛋白质存留率、水中软化点的影响，确定了较合适的缩醛化浴配方及缩醛化条件。
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This paperindicated that it was good for condensation reaction when benzene-ring bearingelectron-attaching groups. It also showed that and the 6-hydroxyl group could bereacted with acyl halide, haloid ether and halo alkene, but not with halo alkane. It wasnot only the first time to find that the reaction product of D-mannitol and aromaticaldehyde is tri-condensation derivatives, but also the first time to obtain thep-phthaldehyde-sorbitol derivatives containing eight hydroxyl groups.
研究发现：苯环上有吸电子基团时对缩合反应有利；多元醇缩醛衍生物6-羟基除与酰氯反应外，也能和卤代酸酯、溴代烯反应，但不与卤代烷反应；首次发现D-甘露醇与醛反应主要得到三缩合物；首次合成了含有8个羟基的对苯二甲醛和山梨醇的缩合物。
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Synthesis of organic sulfuric compounds in aqueous media is carried out by: using thio-olefin compounds with carbonyl compounds, acetal/keltone, hydrazone, oxime, osazone and enamine to synthesize mercaptal/keltone compounds in aqueous media; using thio-olefin compounds with alpha-hydroxyaldehyde/keltone or alpha-halogenated aldehyde/keltone to synthesize thia-olefin derivatives in a queous media; using thio-olefin compounds with alpha, beta-unsaturated hydroxy compounds, C-C treble bond, C-N treble bond, C-C double bond, N-N double bond, C-N double bond, C-S double bond, epoxy and its derivatives, aziridine and its derivatives, cyclopropane and its derivatives and halogenated carboxy to synthesize sulfoether compounds in a queous media.
含水介质中有机硫化合物的合成方法，本发明属于有机合成方法，用硫缩烯酮类化合物与羰基化合物、缩醛/酮、腙、肟、脎、烯胺在含水介质中合成缩硫醛/酮化合物，与α-羟基醛/酮或α-卤代醛/酮在含水介质中合成噻烯类衍生物，与α，β-不饱和羰基化合物、碳碳叁键、碳氮叁键、碳碳双键、氮氮双键、碳氮双键、碳硫双键、环氧乙烷及其衍生物、氮杂环丙烷及其衍生物、环丙烷及其衍生物、卤代烃等在含水介质，中合成硫醚化合物。
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In this paper, we studied the reaction mechanism ofpolyvinyl alcohol acetalizing conjugated olefine aldehyde and thepreparation of granule state of polyvinyl alcohol acetalizingconjugated olefine aldehyde in low temperature.
本文主要研究聚乙烯醇与共轭烯醛的缩醛化反应机理以及低温下颗粒态聚乙烯醇缩共轭烯醛的制备；淀粉与共轭烯醛的反应以及聚乙烯醇与淀粉共混相溶的性质，同时探讨了混合浆液缩共轭烯醛对粘度影响。
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In the existing process of PVB, it has disadvantages of unsteady aldehyde groupdistribution, low content of aldehyde acetal group .
本文针对聚乙烯醇缩丁醛传统生产工艺生产的PVB存在缩醛基分布不均，缩醛度低等缺陷，系统地研究了分阶段醇解一缩合的均相工艺，二甲基亚砜的均相工艺以及极性匹配的醇法均相工艺。
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Synthetic progresses of the sorbitol acetals in process routes, the molar ratios of aldehyde to sorbitol, the reaction temperature, the types and the amount of acid catalysts, the types of acromatic aldehyde, reaction solvents and purification methods of products were reviewed at domestic and aboard with 46 references.
讨论了缩醛反应机理。从反应工艺路线、反应物醛与醇物质的量比、反应温度、酸催化剂的种类和用量、芳香醛的种类、反应溶剂及产物的纯化方法等方面全面综述了国内外山梨醇缩醛类成核剂合成研究进展。
- 更多网络解释与缩醛相关的网络解释 [注：此内容来源于网络，仅供参考]
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Acetal resin：缩醛树脂 聚甲醛树脂
acetal phosphatide | 缩醛磷脂 | acetal resin | 缩醛树脂 聚甲醛树脂 | acetal | 乙缩醛, 乙缩醛二乙醇
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acetal phosphatide：缩醛磷脂
acetal 乙缩醛 | acetal phosphatide 缩醛磷脂 | acetal resin 缩醛尸
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Acetal plastic：缩醛塑料,聚甲醛塑料
Acetal matrix composites|缩醛树脂基复合材料 | Acetal plastic|缩醛塑料,聚甲醛塑料 | Acetal resin|缩醛树脂
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acetal fibre：缩醛纤维
acetal baking insulating paint 缩醛烘干绝缘漆 | acetal fibre 缩醛纤维 | acetal polymer 缩醛缩聚物
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citronellal cycloglycol acetal：香茅醛环乙二醇缩醛
citronella | 香茅,枫茅 | citronellal cycloglycol acetal | 香茅醛环乙二醇缩醛 | citronellal | 香茅醛
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hemiacetal：半缩醛
半缩醛(Hemiacetal)是一类同一碳上连有一个羟基,一个烷氧基和一个氢的有机化合物. 半缩醛可由醛与醇反应得到,而半缩醛可以继续和醇反应得到缩醛. 半缩醛在酸性和碱性水溶液中都是不稳定的. Source: Baidu
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aldolization：缩醛反应
aldolase 醛缩酶 | aldolization 缩醛反应 | aldonic acid 醛糖酸
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ethylidene ether：乙缩醛;乙醛缩二乙醇;醛缩醇;缩醛
ethylidene 亚乙基;乙叉 | ethylidene ether乙缩醛;乙醛缩二乙醇;醛缩醇;缩醛 | ethylol 羟乙基
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cinnamic aldehyde dimethyl acetal：(肉)桂醛二甲缩醛
cinnamene || 苯乙烯 | cinnamic aldehyde dimethyl acetal || (肉)桂醛二甲缩醛 | cinnamic aldehyde || 肉桂醛
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acetals：缩醛
另外:葡萄糖与醛不一样,不能与 2 分子醇作用而只能与 1 分子醇反应,不生 成缩醛(acetals) ,仅生成半缩醛(semiacetals) ,意味着分子中已有半缩醛基存在.